If I double the mass per unit length of guitar string, its natural frequency changes by what factor?
a. 2.0
c. 1.0
b. 1.4
d. 0.71
D
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The _____________strength of a brittle or composite material is the maximum tensile stress determined from a three-point bend test.
Fill in the blank(s) with the appropriate word(s).
A book rests on a table, and the table rests on the ground. Which of the following pairs of forces forms a force pair, or action-reaction pair, obeying Newton's law of force pairs?
A) Gravity pulling down on the table and the book pushing down on the table. B) The ground pushing up on the table and the book pushing down on the table. C) The table pushing up on the book and the book pushing down on the table. D) Gravity pulling down on the book and the book pushing down on the table. E) Gravity pulling down on the book and the table pushing up on the book.
What is the relative humidity of air when it is at its dew point?
What will be an ideal response?
The DNA molecules contain six different bases
Indicate whether the statement is true or false